The impact of location and type on the performance of low-voltage network connected battery energy storage systems

Timur Yunusov, Damien Frame, William Holderbaum, Ben Potter

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

This paper assesses the impact of the location and configuration of Battery Energy Storage Systems (BESS) on Low-Voltage (LV) feeders. BESS are now being deployed on LV networks by Distribution Network Operators (DNOs) as an alternative to conventional reinforcement (e.g. upgrading cables and transformers) in response to increased electricity demand from new technologies such as electric vehicles. By storing energy during periods of low demand and then releasing that energy at times of high demand, the peak demand of a given LV substation on the grid can be reduced therefore mitigating or at least delaying the need for replacement and upgrade. However, existing research into this application of BESS tends to evaluate the aggregated impact of such systems at the substation level and does not systematically consider the impact of the location and configuration of BESS on the voltage profiles, losses and utilisation within a given feeder.

In this paper, four configurations of BESS are considered: single-phase, unlinked three-phase, linked three-phase without storage for phase-balancing only, and linked three-phase with storage. These four configurations are then assessed based on models of two real LV networks. In each case, the impact of the BESS is systematically evaluated at every node in the LV network using Matlab linked with OpenDSS. The location and configuration of a BESS is shown to be critical when seeking the best overall network impact or when considering specific impacts on voltage, losses, or utilisation separately. Furthermore, the paper also demonstrates that phase-balancing without energy storage can provide much of the gains on unbalanced networks compared to systems with energy storage.
LanguageEnglish
Pages202-213
Number of pages12
JournalApplied Energy
Volume165
Early online date31 Dec 2015
DOIs
Publication statusPublished - 1 Mar 2016

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Energy storage
Electric potential
battery
energy storage
electric vehicle
Electric vehicles
Electric power distribution
cable
reinforcement
energy
electricity
Reinforcement
Cables
Electricity
replacement
demand

Keywords

  • energy storage
  • smart grid
  • battery
  • LV networks
  • control

Cite this

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title = "The impact of location and type on the performance of low-voltage network connected battery energy storage systems",
abstract = "This paper assesses the impact of the location and configuration of Battery Energy Storage Systems (BESS) on Low-Voltage (LV) feeders. BESS are now being deployed on LV networks by Distribution Network Operators (DNOs) as an alternative to conventional reinforcement (e.g. upgrading cables and transformers) in response to increased electricity demand from new technologies such as electric vehicles. By storing energy during periods of low demand and then releasing that energy at times of high demand, the peak demand of a given LV substation on the grid can be reduced therefore mitigating or at least delaying the need for replacement and upgrade. However, existing research into this application of BESS tends to evaluate the aggregated impact of such systems at the substation level and does not systematically consider the impact of the location and configuration of BESS on the voltage profiles, losses and utilisation within a given feeder.In this paper, four configurations of BESS are considered: single-phase, unlinked three-phase, linked three-phase without storage for phase-balancing only, and linked three-phase with storage. These four configurations are then assessed based on models of two real LV networks. In each case, the impact of the BESS is systematically evaluated at every node in the LV network using Matlab linked with OpenDSS. The location and configuration of a BESS is shown to be critical when seeking the best overall network impact or when considering specific impacts on voltage, losses, or utilisation separately. Furthermore, the paper also demonstrates that phase-balancing without energy storage can provide much of the gains on unbalanced networks compared to systems with energy storage.",
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The impact of location and type on the performance of low-voltage network connected battery energy storage systems. / Yunusov, Timur; Frame, Damien ; Holderbaum, William; Potter, Ben.

In: Applied Energy, Vol. 165, 01.03.2016, p. 202-213.

Research output: Contribution to journalArticle

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